71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __CPU_TI_AM335X_GPIO_H__
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#define __CPU_TI_AM335X_GPIO_H__
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#include <stdint.h>
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enum {
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AM335X_GPIO_BITS_PER_BANK = 32
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};
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struct am335x_gpio_regs {
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uint32_t revision; // 0x0
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uint8_t _rsv0[0xc]; // 0x4-0xf
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uint32_t sysconfig; // 0x10
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uint8_t _rsv1[0xc]; // 0x14-0x1f
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uint32_t eoi; // 0x20
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uint32_t irqstatus_raw_0; // 0x24
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uint32_t irqstatus_raw_1; // 0x28
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uint32_t irqstatus_0; // 0x2c
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uint32_t irqstatus_1; // 0x30
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uint32_t irqstatus_set_0; // 0x34
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uint32_t irqstatus_set_1; // 0x38
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uint32_t irqstatus_clr_0; // 0x3c
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uint32_t irqstatus_clk_1; // 0x40
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uint32_t irqwaken_0; // 0x44
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uint32_t irqwaken_1; // 0x48
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uint8_t _rsv2[0xc8]; // 0x4c-0x113
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uint32_t sysstatus; // 0x114
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uint8_t _rsv3[0x18]; // 0x118-0x12f
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uint32_t ctrl; // 0x130
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uint32_t oe; // 0x134
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uint32_t datain; // 0x138
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uint32_t dataout; // 0x13c
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uint32_t leveldetect0; // 0x140
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uint32_t leveldetect1; // 0x144
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uint32_t risingdetect; // 0x148
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uint32_t fallingdetect; // 0x14c
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uint32_t debouncenable; // 0x150
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uint32_t debouncingtime; // 0x154
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uint8_t _rsv4[0x38]; // 0x158-0x18f
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uint32_t cleardataout; // 0x190
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uint32_t setdataout; // 0x194
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} __packed;
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static struct am335x_gpio_regs * const am335x_gpio_banks[] = {
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(void *)0x44e07000, (void *)0x4804c000,
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(void *)0x481ac000, (void *)0x481ae000
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};
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void am335x_disable_gpio_irqs(void);
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int gpio_direction_input(unsigned int gpio);
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int gpio_direction_output(unsigned int gpio, int value);
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int gpio_get_value(unsigned int gpio);
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int gpio_set_value(unsigned int gpio, int value);
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#endif /* __CPU_TI_AM335X_CLOCK_H__ */
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